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2/12/2016 8:59:19 PM EDT
I was wondering if anyone has seen a forming tool for a 1.375" freeze plug. I was attempting to center punch and press a ball bearing into the plugs, but I'm having a terrible time with getting them centred.

Thanks for any help
2/12/2016 11:37:55 PM EDT
[#1]
If you already have the tube and threaded end cap, you can find center of the freeze plug.
http://www.ar15.com/forums/t_6_20/444519_DIY_centering_for_freeze_plug_.html
2/13/2016 7:35:09 PM EDT
[#2]
I may give that a try. I had started by using the same concept, only with a cleaning rod.  I'm not sure if I'm starting off screwed up off center, or if it's getting squeezed off center when I push the ball bearing into it.  I have been using a center finder on a combination square lately, but I'm still having trouble.

This is a bit frustrating, as I'm usually really good at nit-picky, detail oriented things like this, that's why I was hoping someone had seen a forming/centering tool in this size. (To take my error out of the equation)

I emailed DM with no response, but I used his old email, perhaps I'll have better luck through his website.
2/15/2016 2:30:18 AM EDT
[#3]
I emailed him 2 weeks ago through his site and still got no response. I have found to start forming the plug and hold center without a press, a loaner flaring tool from autozone works perfectly.
2/15/2016 3:18:13 AM EDT
[#4]
Ebay
2/15/2016 2:28:31 PM EDT
[#5]
No dice on eBay for the 1.375" size
2/16/2016 10:48:16 AM EDT
[#6]
DM sells them formed (formed to a taper) for that size in Stainless Steel (it would fit their 1.5" standard tubes), I would imagine the normal wait time would not apply.  I'm not aware of the a jig personally.  If your building for 30cal I would use VSRs instead.
2/16/2016 1:53:25 PM EDT
[#7]
That's kind of the way I'm leaning at this point. It just sucks that they are much more expensive.
2/20/2016 12:51:54 PM EDT
[#8]
Quoted:
I was wondering if anyone has seen a forming tool for a 1.375" freeze plug. I was attempting to center punch and press a ball bearing into the plugs, but I'm having a terrible time with getting them centred.

Thanks for any help
View Quote


Buy the D size forming tool set.
Have your local machine shop turn down the 110 degree bottom forming base to the
desired inside cup diameter.
2/20/2016 1:31:51 PM EDT
[#9]
A carpenter's solution for drilling center.


Set up a drill press with a sheet of plywood clamped firmly to the table and a forstner bit the size of your freeze plug. Drill a hole deep enough to securely hold your freeze plug in place but don't drill all the way through. Replace the forstner
bit with your drill bit of choice, set the freeze plug into the hole and it is now centered under the bit.

If the hole is slightly oversized, put a wrap or two of painters tape around the circumference of the freeze plug. Fill the cup formed by the tape with water so you don't burn your bit up.


2/22/2016 2:44:36 AM EDT
[#10]
Quote History
Quoted:
A carpenter's solution for drilling center.


Set up a drill press with a sheet of plywood on the table and a forstner bit the size of your freeze plug. Drill a hole deep enough to securely hold your freeze plug in place but don't drill all the way through. Replace the forstner
bit with your drill bit of choice, set the freeze plug into the hole and it is now centered under the bit.

If the hole is slightly oversized, put a wrap or two of painters tape around the circumference of the freeze plug. Fill the cup formed by the tape with water so you don't burn your bit up.


View Quote



That's genius! I'll play around with this and see how it works.
2/22/2016 10:27:14 AM EDT
[#11]
Quote History
Quoted:



That's genius! I'll play around with this and see how it works.
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
A carpenter's solution for drilling center.


Set up a drill press with a sheet of plywood on the table and a forstner bit the size of your freeze plug. Drill a hole deep enough to securely hold your freeze plug in place but don't drill all the way through. Replace the forstner
bit with your drill bit of choice, set the freeze plug into the hole and it is now centered under the bit.

If the hole is slightly oversized, put a wrap or two of painters tape around the circumference of the freeze plug. Fill the cup formed by the tape with water so you don't burn your bit up.





That's genius! I'll play around with this and see how it works.



Thanks! I wish I had a mill, lathe, etc., but this should work well.

I even wondered it the forstner bit was too big, if it could be spun on slow speed and the circumference. be reduced with a file for a perfect fit.
2/22/2016 10:40:56 AM EDT
[#12]
I've always thought this is a very simple solution for finding the center. Heck, even if you had to run to Lowes/HD/etc to buy a small piece of wood and a piece of metal, it's a <$10 project.
2/23/2016 4:02:51 PM EDT
[#13]


I've been using one of these.
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